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Explain Protoderm in primary growth in shoot?
The protoderm is one of the so-called "primary tissues" because it is formed first during germination and subsequent bud growth and development. The protoderm produces new cells on the surface of the apical meristem, and these surface cells migrate downward and mature into the epidermis of the shoot and leaves.
The epidermal layer provides physical protection for the other internal tissues, and most importantly, guards against drying out. The epidermis produces an outer waxy coating from a substance known as cutin. This cuticle layer prevents evaporative water loss. However, leaves need carbon dioxide and they need to get rid of oxygen, so they provide openings for this gas exchange through special cells called guard cells. Two guard cells make up a functional unit, whose scientific name is stomata, or stomate.
Define Functions of fluoride? The only beneficial role demonstrated for fluoride is in reducing the prevalence and severity of dental caries in children and adults. This is en
Which of the following is true for a motor cortex corticospinal interneuron A that produces action potentials during movements of the big toe of the right foot in right-handed Pati
How sugar used in Flavors and Mouthfeel? In frozen desserts, sugars balance flavor and mouthfeel. Since low temperatures tend to numb the taste buds, sugars enhance flavors, th
What is diffusion? Diffusion is the spreading of substance molecules from a region where the substance is more concentrated to another region where it is less concentrated. For
Explain the Obesity - Problems of Older Children and Adolescent Nutrition? One of the major problems is raising obesity rates (upto 30%) in urban, well-to-do school children.Th
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Interferon alfa In about one third of adults and children with chronic hepatitis B, treatment with interferon alfa-2b leads to loss of HBeAg, return to normal aminotransferase
F A TT Y ACIDS They are monocarboxylic organic acids (R.COOH) having a hydrocarbon chain of 4 - 30 carbon atoms. The polar carboxylic group is hydrophilic (Gk. hydro
State four steps to be followed to test for starch in a leaf
MUSCULOSKELETAL SYSTEM: Disease of the skin and musculoskeletal system occur commonly in early age group. There are not many statistics to prove the exact frequency of
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